Are you going to carry the HUB-ee Arduino shield? I want to get these for my younger brother but without the shield the build will get a little messy. It is available here, for example: http://www.createbots.com/hub-ee-bmd-s-proto-shield-kit/

The PWMs are all bit-banged off the instruction clock in for/while loops. See the line “if d <= pulse” right after the “while trigger” loop. Looks a lot like some my own one-hour-project hack code, don’t expect everything to be properly thought out. Pretty neat project even so.

This is not the type of adhesive used for spacecraft. Silicone adhesives evaporate in a vacuum and stick to telescope optics, and are impossible to clean off. We are very strict about keeping silicone out of our labs at NASA.
It will work fine for non-vacuum applications.

I just did the calculations and I think with a 49 kHz oscillator input, it will tune on 129-168 MHz. No idea if this will actually work, or if the LNA response at those frequencies is too poor, but it might be worth a shot.

I second this request. Does anybody know of a good miniature receiver for the 144-148MHz amateur band? I think with these digital tuning chips, the local oscillator is derived from the crystal so you would have to change the crystal/oscillator input frequency to change the tuning range. I don’t think it would work moving all the way to 70cm, but it might work okay on 2m.

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